Sieve for use in making disk sound-records.



No. 865,716. PATENTED SEPT. 10, 1907.

T. H. MAGDO NALD'& F. L. GAPPS.

SIEVE FOR USE IN MAKING DISK SOUND RECORDS. APPLICATION FILED JAN. 7. 1907.

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UNI r'sn STATES PATENT ossr E.

THOMAS H. MACDONALD AND FRANK L. CAPPs, or BRIDGEPORT, CoNNsorrCU'r, Assrsrross TO AMERICAN GRAPHOPHONE COMPANY, OFBRIDGEPORT, CONNECTICUT, A CORPORA- TION OF WEST VIRGINIA.

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' Specification of Intent;

. st m Sept-r10, 1907..

Application filed January 7,1907," Serial ndiasmso.

To all album it may concern:

Be itflr-nown that Tnonss H. MACDQNALI and FRANK L1 nrrs, Citizens of the United States ofAmerica,

sound-records, particularly records made inaccordance with the Hoyt and Gavin patents of Jan. 2, 1906, No.

808,842, No. 808,843, and No. 809,203. According to these patents, the body or main portion hf the disk which carries the sound-record is composed of acorn paratively cheap mater ial, while the surface thereof containing the impressions or other irregularities corresponding to the sound-waves is composed of a more expensive material which is peculiarly adapted to the purpose. The former material (or equivalents therefor) will hereinafter be designated as ordinary stock. or simply stock, while tlie more expensive material intended for the surface of the record will be designatedas glaze. It is desirable, of course, to use as little of the'glaze as possible, and at the same time to insure the presence of a sufiicient amount; and it is also desirable that this glaze be uniformly distributed throughout the surface of the record.

The present invention consists of a machine or apparatus for insuring these two purposes, viz.: The employment oi just the right amount of glaze, no more and no less, and the uniform distribution of the glaze.

The invention will behest understood by reference to the accompanying drawings in which Figure l is a vertical section through our apparatus;

. and Fig. 2 is a plan view of the same with the stationary casing removed.

Upon a table or flat surface A are located two supports B upon which rests our apparatus, so that the; matrix C may be inserted beneath the apparatus.

D represents a metal casing, which may be described as an inverted pan having a central orifice surrounded by an upturned flange E. y

F is astationary spacing sleeve secured firmly in the central opening, as by screws G that pass through flange E.

H is a shaft having a crank-arm at the top, and jour- I naledin the sleeve F. Below the sleeveF, the shaft H is flattened so-as to fit into a corresponding central aperture in the plate or disk I; while the extreme end.

is revolved by 11188.35 of its crank handle, the .disk I -is caused to revolve.

A portion of the disk I (preferably radial segment thereof) is cut away, and a grating or wire mesh K se- Ciird in its place. Thiswill be galled the lower gratmg Fast near the lower endof sleeve F is a star wheel L having concave seats M; on each side of the grating K a shouldered stud N rises from near the circumfer enceo'r' disk I, soas to furnish bearings for. the recipm: eating sieve 0, whose inner end is supported in a manner that will presently be described.

The sieve O is preferably of the same shape as the cut-away portion of disk is located above it, and is provided with a grating or mesh P that will be referred teas the upper grating. The bottom oi sieve O is extended past the center of disk I, and contains a slot Q so as to furnish clearance for the sleeve F.

R is a stud rising from the disk 1, upon which is pivoted the elbow lever S. Depending from one member of lever B is carried a roller T adapted to engage the seats M of star-wheel L; while the other member of the lever is pivotally connected at U to the extension of sieve'Q. Aspring V, whose outer end is secured to a stud W on the disk I serves to draw the sieve O radially inward; "while each tooth of star-wheel L (by moving roller T radially outward) serves to force sieve O radially outward. Consequently, rotation of disk I, by mms of the crank handle,- produces not only a revolution of the sieve 0 upon the axis H, but also gives it a reciprocating movement, radially inward and outward. l

A Covered aperture X will be provided in the stationary casing D, conforming in size and shape to the as to protect them from the powdered composition which the apparat'usis to distribute.

The operation of our apparatus is obvious. A matrix C (which may be heated beforehand) is inserted face upwards in the space between the supports B, just beneath our apparatus. A steel disk Z is placed over the center of the matrix, being centered thereon by the stud 0 thereof which enters a. centrahapcrturc in disk Z. The purpose of this is to prevent any of the glaze from being deposited upon the center oi the matrix, where no record-lines are to be produced. The sieve O is brought underneath the aperture X, and filled with the proper amount of powdered glaze.

The factory manager or expert will have determinedcrank of shaft H is then revolved, whereuponthe sieve O is caused to reciprocate and discharge its contents in, a iairly uniform manner,, whilc at thesame time the sieve and the lower grating are carried around the entire circle. On account of the two gratings, the distribution of the powdredglaze over the su'riacc oi the matrix C is for all practical purposes absolutely uniform. The heat of the matrix causes the powdered glaze to adhere somewhat to its surface. Thereafter, though the -subsequen't steps iorm no part of our present invention, the steel disk Z may be removed, and a lump'of ordinary stock placed upon the matrix C (though the deposit of glaze willremain inter-posed between the. oidinary-stocli and the matrix C) and pressure applied in the usual manner, which will spread out the-ordinary stock and at the same time compress it agai st the glazing already deposited and produce the fini s hed record.

Oi course, instead of taking ordinary stock, an old disk record may be warmed up and placed upon the matrix and re-prcssed, with the same results; or a disk of some other material (cardboard, celluloid, etc.)

may be employed, the heat and pressure serving to bind it firmly to the glazing already deposited byou'r apparatus, and simultaneously produce a finished sound-record. Moreover, instead of placing a matrix C beneath the apparatus, we may use. an' old record (or a disk of any other suitable material), deposit the glazing-thereon by our apparatus, and their place a matrix face downwards on theglazing and subject to heat and pressure in the usual manner.

While we have described our invention withsorne particularity, we have done so only for the sake of clearness, since changes maybemade in the construction and arrangement of parts, and certain features of our invention vused to the exclusion of others. The spirit of our invention consists in causing the powdered glaze to be uniformly distributed over the sur-.

face to be treated by .r'neans of a jogging or shaking motionwhich progresses over the entire surface; and preferably we'employ two gratings; if, for instance, the lower grating shouldbe omitted, we have found that the glazing is liable to be deposited in aseries of windrows,'as it'were. Nevertheless, if the lower grating be omitted, or iff(instead of the sieve with its upper grating) a hopper with a slit or restricted aperture at its'bottom be employed, in either case the apparatus will be within the spirit of our invention.

Having thus described our invention, weclaim:

i. 'l he combination of a-lower grating adapted to travel in a circular path, an upper grating located above the same and adapted both to travel in the same path and also to reciprocate radially of said path.

2. The combination of a lower grating, adapted to travel in a circular path, an upper grating located above the same andIadapted both to travel in the same path and also to reciprocate radially of said path, and common means for actuating both gratings. r

5;. The combination of a lower grating adapted to travel in a circular path an upper grating located above the same and adapted both to travel in the same path and also to reciprocate i'adially of said path, and common'means comprising a stationary star-wheel and a lever co-acting' therewith and connected tosaid upper grating for actuat ins" both gratings.

4. 'lhecombinaiion of :1 .stationar sleeve, one or more projections carried thereby, a revoluble shaft journaled in said sleeve, a plate secured to said shaft and carrying a grating. a reciprocating sieve mounted on said pinto above said grating, and means co-actin with said projec- -end and at its other end carrying a device that (:(HlCiS with said star-wheel where-by the sieve is forced outward, and means for drawing; said sieve inward.

ti. The combination with a stationary casing and a ver- .tic?,l ,sleve made fast in the center thereof, a revoluble "shaft journaledin said sleeve and carrying a plate prdvided with a grating, u reciprocating sieve mounted on said plate above said grating, and means actuated by said shaft for reciprocating said sieve.

' 7L The combination of a stationary casiilg having an open bottom and supporting" :1 stationary sleev in its cehter, a revoluble'shaft journaled in said sleeve and carrying a plate provided with a grating, a reciprocating hopper mounted upon said plate above said grating an elbow-lever pivoted upon said plate and having one end secured to the extension of said sieve and carrying on its other end a roller, :1 stair-wheel fast on said sleeve and adapted to actuate said roller, and a spring attached to said sieve and acting in opposition to said star-wheel.

8. in a device of the character described, a sieve, means for carrving said sieve in a circular path, and means for reciprocating said sieve radially of said path. .l. The combination of a plate having a cutaway portion. reciprocating sieve carried by said plate above said cut-away portion, and common means for rotating said plate and sieve and for reciprocating the latter.

10. In a device of the character described, a revoluble plate carryinga grating, a reciprocating hopper carried by said plate above said grating, and means for revolving the two and reciprocating said hopper,

in testimony whereof we have signed this specification in the presence of two subscribing witnesses.

THOMAS n. MACDONALD.

FRANK L, cArrs,

Witnesses JOHN B. McCAnn, A. n. KnoUeH, 

